I had Mirena inserted on June 19th at my 6 week follow up from giving birth. He presented it like it was the best contraception to get, so I thought "Why not?" I had it inserted right then and it didn't quite go in right the first time, so he tried again. And, yes, it is quite uncomfortable! Well, he thought it was in there correct (99% sure) but decided to send my for an ultrasound the next day to be 100% sure. So I had some cramps the rest of the day and night, nothing I couldn't stand, and went for my US the next day. Sure enough, the IUD had been pushed through my uterine wall and was now somewhere in my pelvic cavity roaming free. I went for a CT Scan because they couldn't find it with the US, and then had to get it laparoscopically removed the same day. So much for trying to be cost efficient with the Mirena! I had some cramps that lasted a few days and continue to have some slight vaginal discharge, but at least it's out. Of course my doc said that was the first time he had encountered the Mirena going through the uterine wall. (Great to hear) Depo worked great for me before, and that's what I'm doing now.